delete the content of the blog

I like to delete a blog but I want to keep the domain. MR Larsen gave me this blog http://dennis.wordpress.com/ I like the domain, but there are stuff on it and I like a clean start whit it. So I can put my own blog ( http://bloghome.wordpress.com/ ) on it and delete it then. (hopefully the dates will be the same then.)
Can this be done on a easy way or do I need to delete every post manually.
Thanks a lot
Dennis

@dennispater
Are you having some difficulty communicating in English with Podz? Is Dutch perhaps your mother tongue?
The reference to the top right hand corner could be a reference to sending in a feedback and authorizing Podz to do this on your behalf. I am not sure of that but it's worth trying. Otherwise you must delete each and every post in the "Dennis" blog manually.
After that you can import your contents from your "dennispater" blog into the "dennis" blog. Then you will have to import the blogroll seaparately. Lastly you can delete the "dennispater" blog.

@timethief
Yes it is. And Translated it, but still didn't figure it out. I'm sorry for it. If you read the first post on my blog(s) then you notice a little english ;)

@all
I've done the transport (very easy and smooth), but the Archives didn't move whit it :'(
When i click on a date it really show the context then again.
Can that maybe be undone. And show the archive what i posted on http://bloghome.wordpress.com/
Thanks again

When you export/import your blogroll must be done separately from the blog.
(1) Visit http://mydomain.tld/wp-links-opml.php. [Substitute the name of your own blog for "mydomain.tld"]. That generates an OPML list which you can import via Dashboard -> Blogroll -> Import Links. Do note though that the link categories won't come over and you'll have to edit them manually.
(2) You will have to save this opml list to your desktop and then open it as a text file in a plain text editor like either Notebook or Wordpad (warning: do not open it in MicroSoft Word) and save it as *.txt.
(3) Now you import the blogroll in the *.txt file into the blog.
(4) Each link will have to be re-assigned to specific categories.

Please accept my apologies for reverting to the use of the machine for translation. But believe me it is better than my own very bad attempts would have been. You will now have to take up the archives issue with Podz in a feedback. Best wishes for happy blogging. :)